I just installed stock rock sliders. They seem fine, but they are my first ones that I have ever owned.
Comparing the design to what I have seen on the aftermarket stuff I could say that I am fairly impressed. The mounting design on the stock rails seems more substantial and distrubuted along the length of the rails.
I purchased them from
http://www.toyotapartsoutlet.com/
Did not have to move the brake lines, which I think you have to do with the Bentups, I don't know about the others.
Paid w\o shipping $390.60 for a pair. They are fully powdercoated (at least that's how their advertized they have a slight texture to the finish). If you check some of the aftermarket ones you will find that they do not always include a finish and that will cost extra.
The stock rails don't stick out that much. But they do a little bit, enough so that I notice it while exiting the vehicle. I wonder if there are going to be a lot of banged shins with the more extended rails.
I am kind of glad I went with them as if I went with the more extended aftermarket ones I would possibly be running into space considerations in the garage.
Looking at the stock rails I guess if I needed them extended it wouldn't be that hard, additional hardware could either be welded or bolted to them.
I want to keep weight to a minimum, I would be interested to see a comparison in the weights of all the available rails. The shipping weight for the stock rails was 39 # each, so I figure that they could weigh anywhere from between 36 # to 38 #.